World Neurosurg
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Case Reports
Mini pterional transsylvian approach for resection of a cavernous malformation in the optic chiasm.
Optic chiasm cavernous malformations (CMs) are rare. Patients with these CMs typically present with progressive vision loss and are treated via microsurgical resection. We present a middle-aged man with a CM of the optic chiasm and right optic nerve treated via microsurgical resection. ⋯ At 6-week follow-up, the patient reported stabilized vision in his right eye, and a transient postoperative deficit in his left eye had fully resolved. Postoperative magnetic resonance imaging showed that gross total resection was achieved. Optic apparatus CMs are approached using technical principles similar to brainstem CM resections.
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Type II odontoid fractures are the commonest C2 fractures. The management of dens fractures remains controversial with various radiological and fracture morphological factors affecting the approach and outcomes. ⋯ Anterior odontoid screw fixation is technically straightforward, less morbid, and preserves biomechanical cervical mobility, when compared with the posterior instrumentation. With careful patient selection, meticulous surgical planning, and intraoperative image-guided screw insertion, good fracture union outcomes can be obtained. In the current study, we were able to achieve stable fracture union in 83.7% patients.
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We assessed the sequential magnetic resonance imaging changes of indirect neural decompression after minimally invasive lumbar lateral interbody fusion (LIF) combined with posterior percutaneous pedicle screw (PPS) fixation for degenerative spondylolisthesis (DS) according to the severity of preoperative lumbar spinal stenosis. ⋯ Sequential enlargement of the spinal canal was obtained by the thinning of the ligamentum flavum after LIF and PPS fixation in patients with DS with both mild and severe stenosis. The effect of indirect neural decompression was equivalent even in those with severe lumbar spinal stenosis.
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We describe a continuous monitoring method aimed at preserving nerve function during biopsy of lesions on the oculomotor nerve using stimulation of the oculomotor nerve proximal to the lesion. ⋯ This method of continuous monitoring of the function of the oculomotor nerve is simple to use and is suitable for lesions in close proximity to the oculomotor nerve.
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The transradial approach using a Simmons-shaped catheter has been increasingly used for diagnostic cerebral angiography and neurointervention. In the transradial approach for neurointervention, the right radial artery is mainly used. However, in interventional cardiology, there are apparent clinical benefits with the left transradial approach for right-handed patients. To our knowledge, no studies have reported on neurointervention with the routine use of the left transradial approach. We therefore devised a novel technique for cases with an unachievable form of the Simmons shape using the standard technique, which we named the "interchange technique." The purpose of this study was to evaluate the technical feasibility of the left transradial neurointervention. ⋯ The left transradial approach for neurointervention is a technically feasible, safe, and effective alternative while providing more comfort to right-handed patients.